What are the physiological links (carcinogens, stress, diet, radiation, radon gas, viruses, etc.) and how do these risk factors cause lung cancer.

Epidemiology of lung cancer.
• What are the links between lung cancer and human populations (including statistics)? Make sure to clearly state your hypothesis? What evidence is there to support/disprove the hypothesis?
• What behaviors, practices, environmental exposures, occupations, socio-economic status, heredity, race, gender, etc. are associated with lung cancer?
• What are the physiological links (carcinogens, stress, diet, radiation, radon gas, viruses, etc.) and how do these risk factors cause lung cancer.

References: Consult at least 5 sources for your information.
Use only authoritative sources for the paper and at least one scientific journal article as a source. If you use the internet, make sure that the site is reputable (i.e., a university, medical center, online scientific journal). At least one article must be from a peer-reviewed journal (in other words, you cannot have only websites and internet sources). Medline and Medline-Plus are available from the library computers.
List the bibliography at the end of your paper using a standard and consistent format (APA).